You can talk to your loved one all you want. It won't satisfy the depth of communication you long for, but it will bring some comfort. Just remember, God forbids us to try to contact our departed loved ones through mediums or séances (Deuteronomy 18:10–12).
In Matthew 17 we see Jesus walking up a high mountain with Peter, James, and John. Jesus is transfigured (changed) right before their eyes, and then Moses and Elijah (who had been in Heaven for fifteen hundred and six hundred years, respectively) show up. Scripture says, “Moses and Elijah appeared to them [Jesus, Peter, James, and John], talking with Him” (v. 3). While we can’t see our loved ones face-to-face, we believe it’s perfectly fine to talk to them.